Duplicate head shell and tube condenser



' Dec. l0, 1929. T. sHxPLEY 1,739,018

DUPLICATE HEAD S12 T., AND TUBE CONDENSER Filed March 14, 1929 2 Sheets-Sheet l will .Q xm QW www w ww Dec. 10, 1929.

T. SHIPLEY DUPLICATE HEAD SHELL AND TUBE CONDENSER Filed March 14, 1929 2 Sheets-Sheet 2 1s irequently diicult to obtain v tween each partition walland the tube sheet c as well 'as between the rim of the water box t head and the tube sheet flange or the end of feo "Patented Dec. in, i929 UNITED sTALTEs THOMAS SHIPLEY, OF YORKQPENNSYLVANIA, ASSIGNOR "T YORK ICE MACHINERY i CORPORATION, OF YORK, PENNSYLVANIA, A CORPORATION 0F DELAWARE DUPLICATE HEAD SHELL AND TUBE CONDENSER p Application iiled March 14, 1929. Serial No. 347,000.

y This invention relates to multi-pass tube condensers and more particularly to thehead and Water box construction for the condenser. ,One well known type of multi-pass tube condenser is provided at each end with a water box formed by the ends of the con denser shell, the' tube sheet and water box head and partitioned by means of lateral danges o r walls cast integrally with the im water bor head to reverse the direction of iiow through the condenser. The partition wall segregate groups of the condenser tubes so that 'the liquid passing through the condenser is directed in a sinuous path, but it is a tight joint bethe shel This diiculty results from distorec tion of the tube sheet when the tubes are eX-4 anded" or welded therein, the tube sheet y eing bulged adjacent the tubes and having an uneven surface after the l secured" in the sheet. fore, that the edges of the partition ywalls are likely to abut the tube sheet only at certain points when these partitions are cast-integrally with thel water box head and it isimjoints possible to ascertain whether the formed" between the partitions and the tube sheet are tight after the' water box head has been secured in place. s

v It is an object of the present invention to provide an inner or false head desi ed to overlie the ends of the desired numelelr and arrangement of tubes to iorrn a partition'l l memberior one of the passes of the .con-

denselali-l the fianges of the inner head su planting the usual partition flanges on t e vmain head of the water box,

It is a further provide novel fastening means to cooperpte with the tie-rods of the condenser in that both the inner to the same tie-rods, thus minimizing the amount of tube s ace utilized lfor the lnsertion of the tie-ro s.

Other objects will be apparentfrom the following description, taken in connection with thedrawings in which v Y' tubes have been f It is evident, there-` inner h of tubes, some'of the tubes of and outer heads are securedl Figure l is a longitudinal vertical sec-- tion of a condenser provided with one form PATENT ori-Ica of inner head showing itsvrelation to the tubes and outer head;

Figure 2 is a section taken on the line 2-2 of- Figure l, the manner of securing the inner and outer heads to the tie-rods being shown;

Figures 3 and 4. are end views, partly in section, the outer heads being removed from the condenser;

Figure 5 is a perspective view of the inner head; and V Figure 6 is a partial. sectional view illust'rating a modified form of means for securing the heads to the condenser.

' Referring to the drawings, it will be seen that the condenser comprises the usual shell 11, ltube sheets 12,A 12", tubes 13 and main or outer heads 14, 14'.' These parts of the condenser 'are preferably iire welded together throughout. The condenser is also provided with water inlet 15, water outlet 16, am-

monia inlet'l? and ammonia outlet 18;'

s is customary in multi-pass condensers, `the path of the fluid through the tubes 13vis sinuous, the direction of flow in some of the tubes being opposite to that in others. For

the purpose of directing the flow of fluid, which in the present instance is water, the

eads or partition members 19 are cored to over-lie a selectedvnumber or group l each group discharging into the partition member while others of the tubes -convey the water in the opposite .direction to the other end of the condenser.

'- 'The manner of securing the partition lnem-` bers 19 in position with respect to the tube v,sheets is clearly shown in Figure 2 from y which it will 4be seen that the tie-rods 20, each object of the invention to s of which is provided with a threaded end portion 21, project through holes 22 in the partition the ends 21 ofthe members.l Stud nuts 23 coact with tie-rods to clamp the flanges 24 of the partition members against the tube Sheets12. Each of the npts 23 has a threaded with respect to the flanges of the tube sheet or the shell of the condenser.

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In the modification illustrated in Figure 6 the partition member and Water box head are fastened to the tube sheet by means of tie-bolts welded to the tube sheet, the drawing showin a single tie-bolt 27. The manner of app ying the stud nuts and cap nuts to clamp the inner and outer heads in position is identical with that described above in connection with the use of tie-rods. WVhere a condenser of relatively great diameter, or having a large number of tubes, is employed it ma be desirable kto use more than one partition member at each end. of the condenser. It is, of course, evident that the means for securing a single partition member to the tube are equally applicable to two or more such members applied to one tube sheet.

lVith the arrangement described above it has been found that the partition membersl may be snugly fitted to the tube sheets; at the same time the Water box heads, having no internal flanges, are susceptible of close4 application to the tube sheet flange or shell of the condenser. It is also to be noted that the fastening means cooperate with the partition members and the tie-rods to effectively reinforce the tube sheets, the arrangement being such that a relatively small number of tie-rods may be employed without sacrificing condensing surface or strength. It is thus possible to expedite assembly, facilitate repairs and reduce leakage to a minimum.

While the example illustrated and described refers to a condenser it is obvious that the invention is applicable to brine coolers and othertypes of heat exchangers and it is intended that the appended claims define apparatus of this general nature.

lVhat is claimed is:

1. An apparatus of the class described comprising a shell; a tube sheet; a water box head; an inner head interposed between said tube sheet and said Water box head; fastening means for holding said inner head in engagement with said tube sheet; and means cooperating with said fastening means for securing said water box head to form a chamber at the end of said shell.

2. An apparatus of the class described comprising a shell; a tube sheet; a water box head having an aperture therein; an inner head interposed between said tube sheet and said water box head; fastening means for holding said inner head in engagement with said tube sheet, said fastening means having a threaded portion extending therefrom and projecting through the aperture in said water box head; and means cooperating with said threaded portion for securing said water box head to form a chamber at the end of said Shell.

3.'An apparatus of the class described comprising a shell; a tube sheet-at each end of the shell; a plurality of tubes having their vends secured to said tube sheets; a water.

box head at each end of the shell, said water box heads having apertures therein; an inner head interposed between each tube sheet and `Water box head; a plurality of tie-rods extending longitudinally of the shell, each of said rods being disposed in one of said tubes, the ends of said tie-rods being threaded and projecting through said inner heads; a nut cooperating with each end of said rods to hold said inner heads in engagement with the tube sheets, each of said nuts having a threadedstud portion projecting therefrom and through saidwater box head; and a nut cooperating with each of said threaded stud portions for securing the Water box heads to form a chamber at each end of the shell.

In testimony whereof I have signed my name to this specification.

THOMAS SHIPLEY. 

